40545423 has 12 divisors (see below), whose sum is σ = 58663800. Its totient is φ = 26984976.

The previous prime is 40545409. The next prime is 40545437. The reversal of 40545423 is 32454504.

It is an interprime number because it is at equal distance from previous prime (40545409) and next prime (40545437).

It is not a de Polignac number, because 40545423 - 2¹⁴ = 40529039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40545223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2428 + ... + 9326.

It is an arithmetic number, because the mean of its divisors is an integer number (4888650).

Almost surely, 2^40545423 is an apocalyptic number.

40545423 is a deficient number, since it is larger than the sum of its proper divisors (18118377).

40545423 is a wasteful number, since it uses less digits than its factorization.

40545423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7558 (or 7555 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 40545423 is about 6367.5287985214. The cubic root of 40545423 is about 343.5426108603.

Adding to 40545423 its reverse (32454504), we get a palindrome (72999927).

The spelling of 40545423 in words is "forty million, five hundred forty-five thousand, four hundred twenty-three".